Alcatel-Lucent 6850-48 网络指南

IPX RIP/SAP Filtering

Configuring IPX

page 33-14

OmniSwitch AOS Release 6 Network Configuration Guide

Whenever you use multiple “allow” filters you must first define a filter to block all RIPs or SAPs. Then, 
all of the subsequent “allow” filters of the same type must be at least as specific in all areas for the filters 
to work. Note that filtering precedence is related only to “allow” filters. Multiple “block” filters can be 
defined with varying specificity in each of the areas of the filter.

For example, consider a switch that knows of multiple Type 0004 SAPs on various networks, including a 
network with an address of “40.” The switch also knows of various types of SAPs on Network 40. For this 
example, you want to block all SAP updates coming from Network 40, but you want to allow all Type 
0004 SAPs, including the ones that come from Network 40. To meet these objectives, you would config-
ure the following filters:

Filter 1 

This filter will block all SAP Type updates on all nodes of network 40.

This filter will allow only SAP Type 0004 updates on all nodes of network 40. It is more specific than the 
block filter so only SAP Type 0004 updates will be allowed.

The filters shown below will not work for our example because in Filter 2 the type of service is less 
specific than the type defined in Filter 1. All Type 0004 SAPs will be blocked by the filter.

Filter 1 

This filter will block only SAP Type 0004 updates on all nodes of network 40.

This filter will allow all SAP Types on all nodes of network 40. It is less specific than the block filter so all 
SAP updates will be allowed.

When you flush the RIP/SAP table(s), only routes learned by RIP and SAP are deleted; static routes are 
not removed. The RIP Table and SAP Bindery Tables can contain a maximum of 2,000 entries each.

Use the 

 command to flush the IPX RIP and/or SAP Bindery Tables. Enter the command, 

followed by the table that you want to clear (rip, sap, or all). For example to clear all dynamic entries from 
both the RIP and SAP tables you would enter:

-> clear ipx route all

Use the show ipx route command to display the IPX RIP Routing Table.